/* ====== 响应式断点与设计系统变量 ====== */
@custom-media --viewport-xs (max-width:480px);
@custom-media --viewport-sm (max-width:768px);
@custom-media --viewport-md (max-width:992px);
@custom-media --viewport-lg (max-width:1200px);



/* 设计变量 */
:root {
  --color-primary: #C10715; --color-secondary: #8B0000; --text-dark: #2c3e50;
  --text-light: #666; --font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
}

/* 全局基础 */
* { margin:0; padding:0; box-sizing:border-box }
body { 
  font-family: var(--font-family); line-height: 1.6; 
  background-color: #ffffff !important; overflow-x: hidden; 
}

/* ====== 开始：Banner样式 ====== */
/* 核心容器 */
.banner-section, .banner-container {
  position: relative;
  width: 100%;
  height: 100%;
  overflow: hidden;
}

/* 轮播图片 */
.banner-image {
  position: absolute;
  top: 0;
  left: 0;
  width: 100vw;
  height: 100%;
  background: center/cover no-repeat;
  opacity: 0;
  transition: opacity 0.3s ease-out;
}
.banner-image.active { opacity: 1 } /* 激活状态 */

/* 控制面板 */
.banner-controls {
  position: absolute;
  bottom: 20px;
  left: 50%;
  transform: translateX(-50%);
  display: flex;
  gap: 10px;
  align-items: center;
  z-index: 10; /* 确保在图片上方 */
}

/* 轮播指示点 */
.banner-dot {
  width: 8px; 
  height: 8px;
  background: rgba(255,255,255,0.5); /* 半透明白色 */
  border-radius: 50%;
  cursor: pointer;
  transition: all 0.3s ease;
  border: 2px solid transparent; /* 增加一个透明边框 */
}
.banner-dot.active { 
  background: #fff; /* 完全不透明的白色 */
  width: 12px; 
  height: 12px;
  border: 2px solid rgba(255,255,255,0.3); /* 轻微的外边框 */
}

/* 响应式适配 */
@media (max-width:768px) {
  .hero-section {
    width: 100%; 
    margin: 0; 
    margin-top: 50px; /* 为手机端导航预留空间（下移到50px） */
    height: 80vw; 
    max-height: 60vw;
    min-height: 250px; 
    aspect-ratio: 16/9;
  }
  
  .banner-section {
    margin-top: 50px; /* 确保不被导航栏遮挡（下移到50px） */
  }
}

/* 超小屏幕额外适配 */
@media (max-width:480px) {
  .hero-section { margin-top: 50px; }
  .banner-section { margin-top: 50px; }
}
  
  .banner-controls { bottom: 15px; gap: 6px }
  .banner-dot {
    width: 6px; 
    height: 6px;
    background: rgba(255,255,255,0.7); /* 移动端略微不同的透明度 */
  }
  .banner-dot.active { 
    width: 10px; 
    height: 10px;
  }

  /* 服务模块移动端适配 */
  .service-section {
    display: block; width: 100%;
    background: #ffffff !important;
    padding: 20px 0;
  }
  .service-grid { gap:15px; padding:0 15px }
  .service-item { min-width:65px }
  .service-icon {
    width:60px; height:60px;
    margin-bottom:10px; border-radius:15px;
  }
  .service-icon svg { width:30px; height:30px }
  .service-title { font-size:12px }

  /* 文化遗产模块适配 */
  .cultural-heritage-section { padding:20px 0 }
  .heritage-image-section { width:100% }
  .heritage-full-image { width:100%; height:auto; object-fit:cover }
  .heritage-grid { grid-template-columns:repeat(3,1fr); gap:25px }
  .heritage-item { 
    display: flex; 
    flex-direction: column; 
    align-items: center; 
    text-align: center; 
  }
  .heritage-icon { 
    width: 60px; 
    height: 60px; 
    margin-bottom: 10px;
  }
  .heritage-icon svg { 
    width: 30px; 
    height: 30px; 
  }
  .heritage-text h3 { 
    font-size: 14px; 
    margin-bottom: 5px; 
  }
  .heritage-text p { 
    font-size: 12px; 
    line-height: 1.5; 
  }

/* 大屏适配 */
@media (min-width:800px) {
  .hero-section {
    position:relative; top:0; left:0;
    width:100vw; height:100vh; z-index:1;
    max-height:900px; min-height:500px;
    overflow:hidden;
  }
  body { padding-top:0; max-height:none }
}
/* ====== 结束：Banner样式 ====== */

/* ====== 开始：移动端快捷导航栏样式 ====== */
@media (min-width:769px) { .mobile-nav-section { display: none } } /* 桌面端隐藏 */

.mobile-nav-section {
  background-color: #ffffff !important;
  padding: 25px 0 8px 0; /* 上方留白加高，下方留白也加高一些 */
}

.mobile-nav-container { /* 导航容器 */
  max-width: 600px; margin: 0 auto; padding: 0 15px;
}

/* 导航网格布局 */
.mobile-nav-grid {
  display: grid !important;
  grid-template-columns: repeat(4,1fr) !important;
  gap: 15px;
  background: #ffffff;
  border-radius: 25px;
  padding: 40px 15px 20px 15px; /* 上方留白加高，下方留白也加高一些 */
  box-shadow: 0 10px 30px rgba(0,0,0,.08), 0 5px 15px rgba(193,7,21,.05);
  border: 1px solid rgba(0,0,0,.05);
}

.mobile-nav-item { text-align: center; } /* 单个导航项 */

/* 导航链接样式 */
.mobile-nav-link {
  display: flex;
  flex-direction: column;
  align-items: center;
  text-decoration: none;
  color: var(--text-dark, #333);
  transition: transform .1s ease;
}

.mobile-nav-link:active { 
  transform: scale(0.95); 
  opacity: 0.8; 
} /* 点击反馈效果 */

/* 导航图标容器 */
.mobile-nav-icon {
  width: 50px; height: 50px;
  background: rgba(193,7,21,.1);
  border-radius: 15px;
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 8px;
  transition: background-color .2s ease;
}

.mobile-nav-icon svg { /* 图标细节 */
  width: 28px; height: 28px;
  stroke: var(--color-primary, #C10715);
  stroke-width: 2;
}

/* 导航标题文字 */
.mobile-nav-title {
  font-size: 12px;
  font-weight: 500;
  color: var(--text-light, #666);
  letter-spacing: .5px;
}

/* 超小屏幕适配 */
@media (max-width:480px) {
  .mobile-nav-grid { 
    grid-template-columns: repeat(4,1fr) !important; 
    gap: 8px !important;
    display: grid !important;
    width: 100% !important;
    max-width: 100% !important;
    overflow: visible !important;
  }
  .mobile-nav-item { 
    width: 100% !important;
    min-width: 0 !important;
    max-width: 100% !important;
    flex: 0 0 auto !important;
  }
  .mobile-nav-icon { width: 40px; height: 40px }
  .mobile-nav-icon svg { width: 22px; height: 22px }
  .mobile-nav-title { font-size: 10px }
}

/* 额外的小屏幕适配 */
@media (max-width:600px) {
  .mobile-nav-grid { 
    grid-template-columns: repeat(4,1fr) !important; 
    gap: 10px !important;
  }
}

/* 强制移动端导航布局 */
@media (max-width:768px) {
  .mobile-nav-grid {
    display: grid !important;
    grid-template-columns: repeat(4,1fr) !important;
    grid-template-rows: 1fr !important;
    gap: 10px !important;
    width: 100% !important;
    max-width: 100% !important;
  }
  
  .mobile-nav-item {
    width: 100% !important;
    min-width: 0 !important;
    max-width: 100% !important;
    grid-column: span 1 !important;
  }
  
  /* 增加产品展示区域与移动端导航之间的间隙（上方留白加高） */
  .product-showcase {
    margin-bottom: 45px !important;
  }
  
  .mobile-nav-section {
    margin-top: 0 !important;
    padding-top: 25px !important; /* 上方留白加高 */
    padding-bottom: 8px !important; /* 下方留白也加高一些 */
  }
  
  /* 进一步减少移动端间隙 */
  .section-title-wrapper {
    margin-bottom: 8px !important;
  }
  
  .heritage-description {
    margin-bottom: 6px !important;
  }
  
  /* 强制减少所有相关元素的间隙 */
  .product-showcase * {
    margin-bottom: 0 !important;
  }
  
  .mobile-nav-section * {
    margin-top: 0 !important;
  }
}

/* 统一背景样式 - 强制白色背景，覆盖所有模式 */
.mobile-nav-section {
  background-color: #ffffff !important;
}

.mobile-nav-grid {
  background: #ffffff !important;
  box-shadow: 0 10px 30px rgba(0,0,0,.08), 0 5px 15px rgba(193,7,21,.05) !important;
  border: 1px solid rgba(0,0,0,.05) !important;
}

/* 强制覆盖深色模式 */
@media (prefers-color-scheme: dark) {
  body {
    background-color: #ffffff !important;
  }
  
  .mobile-nav-section {
    background-color: #ffffff !important;
  }
  
  .mobile-nav-grid {
    background: #ffffff !important;
  }
}

/* ====== 产品展示区域样式 ====== */
.product-showcase.video-section { width: 100%; max-width: none; padding: 50px 0; margin: 0; }
.product-showcase .container { max-width: 1400px; margin: 0 auto; padding: 0 15px; }

/* 标题区域 */
.section-title-wrapper { margin-bottom: 40px; text-align: center; }
.prelude-text { color: #C10715; font-size: 1.6rem; letter-spacing: 0.2em; }
.section-prelude { display: flex; justify-content: center; align-items: center; margin-bottom: 15px; position: relative; }
.prelude-line { width: 30px; height: 2px; background-color: var(--brand-red); margin: 0 10px; opacity: 0.7; }
.section-title { font-size: 36px; color: var(--text-dark); margin-bottom: 15px; }

/* 产品描述 */
.heritage-description { 
  max-width: 800px; margin: 0 auto 30px; color: #2c2c2c; 
  line-height: 1.8; font-size: 20px; text-align: center; font-weight: 300; 
}

/* 产品网格布局 */
.product-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 30px; }
.product-card { 
  background: #fff; border-radius: 15px; overflow: hidden; 
  box-shadow: 0 10px 25px rgba(0,0,0,0.08); height: 380px; 
  display: flex; flex-direction: column; transition: transform 0.3s ease; 
}
.product-card:hover { transform: translateY(-10px); }

/* 卡片内容 */
.product-link { text-decoration: none; display: flex; flex-direction: column; height: 100%; }
.product-image { 
  width: 100%; height: 100%; overflow: hidden; 
  display: flex; align-items: center; justify-content: center; 
}
.product-image img { width: 100%; height: 100%; object-fit: cover; }

/* 产品信息 */
.product-info { 
  height: 50px; display: flex; align-items: center; justify-content: center; 
  background: #f9f9f9; border-top: 1px solid #f0f0f0; 
}
.product-info h3 { 
  color: var(--text-dark); font-size: 16px; font-weight: 600; 
  text-align: center; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; 
  position: relative; padding: 8px 15px; background: #f9f9f9; transition: all 0.3s ease; 
}
.product-info h3::after { 
  content: ''; position: absolute; bottom: 0; left: 0; width: 0; height: 2px; 
  background: linear-gradient(to right, var(--brand-red), #ff4d4f); transition: width 0.3s ease; 
}
.product-card:hover .product-info h3::after { width: 100%; }

/* 标题装饰线 */
.section-prelude::after { 
  content: ''; position: absolute; bottom: -8px; left: 50%; transform: translateX(-50%); 
  width: 10%; height: 3px; background: linear-gradient(90deg, 
    rgba(193,7,21,0), 
    rgba(193,7,21,0.15) 20%, 
    rgba(193,7,21,0.15) 80%, 
    rgba(193,7,21,0)); 
  border-radius: 2px; 
}

/* 响应式适配 */
@media (max-width: 768px) {
  .product-showcase { 
    margin-top: 10px !important; 
    padding: 10px 0 !important; 
    background: #ffffff !important; 
    margin-bottom: 3px !important;
  }
  .section-title-wrapper { margin-bottom: 10px !important; }
  .product-grid { grid-template-columns: repeat(2, 1fr); gap: 20px; }
  #home-product-grid { grid-template-columns: repeat(2, 1fr) !important; }
  .product-card { height: auto; }
  .product-image { height: 200px; }
  .heritage-description { 
    font-size: 16px; 
    line-height: 1.6; 
    padding: 0 15px; 
    margin-bottom: 8px !important; 
  }
  
  /* 移动端标题装饰线上移 */
  .section-prelude::after {
    bottom: -2px !important; /* 从 -8px 上移到 -2px，向上移动 */
    width: 15% !important; /* 移动端装饰线稍微宽一些 */
  }
}

@media (min-width: 769px) {
  .product-showcase { margin-top: 80px; background: #ffffff !important; }
}
/* ====== 结束：产品展示区域样式 ====== */

/* ====== 开始：文化传承板块样式 ====== */
.cultural-heritage-section {
  background-color: #f4f4f4;
  padding: 50px 0;
  position: relative;
  overflow: hidden;
}

/* 内容容器 */
.heritage-content {
  display: flex;
  flex-direction: column;
  align-items: center;
  max-width: 1200px; margin: 0 auto;
  padding: 0 15px; margin-top: 80px;
}

/* 网格布局 */
.heritage-grid {
  display: grid;
  grid-template-columns: repeat(3,1fr);
  gap: 40px; width: 100%;
  margin-bottom: 40px;
}

.heritage-visual { display: none } /* 隐藏视觉元素 */

/* 单个项目 */
.heritage-item {
  background-color: transparent; border: none; box-shadow: none;
  display: flex; flex-direction: column;
  align-items: center; text-align: center;
  transition: all 0.4s ease; position: relative;
}
.heritage-item:hover { transform: translateY(-10px) } /* 悬停动画 */

/* 图标容器 */
.heritage-icon {
  width: 80px; height: 80px;
  display: flex; align-items: center; justify-content: center;
  background-color: rgba(193,7,21,0.05);
  border-radius: 20px; margin-bottom: 20px;
  transition: transform 0.3s ease;
}
.heritage-item:hover .heritage-icon { transform: rotate(5deg) } /* 悬停旋转 */

/* 图标细节 */
.heritage-icon svg {
  width: 40px; height: 40px;
  color: var(--brand-red); stroke-width: 2;
}

/* 文字内容 */
.heritage-text h3 {
  font-size: 18px; color: var(--text-dark);
  margin-bottom: 10px; font-weight: 600; letter-spacing: 1px;
}
.heritage-text p {
  font-size: 14px; color: var(--text-light); line-height: 1.6;
}

/* 图片板块 */
.heritage-image-section {
  width: 100%; max-width: 1440px;
  margin: 0 auto; padding: 0 15px;
}
.heritage-full-image {
  width: 100%; height: auto; border-radius: 20px;
  object-fit: cover; box-shadow: 0 15px 30px rgba(0,0,0,0.1);
  transition: transform 0.5s ease, box-shadow 0.5s ease;
}
.heritage-full-image:hover { /* 图片悬停效果 */
  transform: scale(1.02);
  box-shadow: 0 20px 40px rgba(0,0,0,0.15);
}

/* 移动端适配 */
@media (max-width:768px) {
  .cultural-heritage-section { padding:20px 0 }
  .cultural-heritage-section .container { padding:0 }
  .heritage-image-section { width:100% }
  .heritage-full-image { 
    width:100%; height:auto; object-fit:cover;
    border-radius:15px; /* 圆角调整 */
  }
  .heritage-grid { grid-template-columns:repeat(3,1fr); gap:25px }
  .heritage-item { 
    display:flex; flex-direction:column; 
    align-items:center; text-align:center; 
  }
  .heritage-icon { 
    width:60px; height:60px; margin-bottom:10px 
  }
  .heritage-icon svg { width:30px; height:30px }
  .heritage-text h3 { font-size:14px; margin-bottom:5px }
  .heritage-text p { font-size:12px; line-height:1.5 }
  br { line-height:20px } /* 换行高度调整 */
}

/* ====== 文化传承图片板块样式 ====== */
.heritage-image-section {
    width: 100%;
    max-width: 1440px;
    margin: 0 auto;
    padding: 0 15px;
}
.heritage-full-image {
    width: 100%;
    height: auto;
    border-radius: 20px;
    object-fit: cover;
    box-shadow: 0 15px 30px rgba(0, 0, 0, 0.1);
    transition: transform 0.5s ease, box-shadow 0.5s ease;
}

.heritage-full-image:hover {
    transform: scale(1.02);
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.15);
}

@media (max-width: 768px) {
    .heritage-full-image {
        border-radius: 15px;
    }
}
@media (max-width: 768px) {
    br {
        line-height: 20px;
    }
}
/* ====== 结束：文化传承板块样式 ====== */

/* ====== 开始：视频板块样式 ====== */
/* 网格布局 */
.featured-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr;
  grid-template-rows: repeat(2,1fr);
  gap: var(--spacing-md);
}
.featured-item:first-child { grid-row: span 2 }

/* 视频卡片 */
.featured-item {
  position: relative;
  border-radius: var(--radius-lg,16px);
  overflow: hidden;
  transition: transform 0.3s cubic-bezier(.4,0,.2,1), box-shadow 0.3s ease;
  box-shadow: 0 4px 10px rgba(0,0,0,.05);
}
.featured-item:hover { /* 悬停效果 */
  transform: translateY(-10px);
  box-shadow: 0 20px 40px rgba(0,0,0,.1), 0 15px 30px rgba(193,7,21,.05);
  z-index: 10;
}

/* 缩略图 */
.featured-thumbnail {
  width: 100%; height: 100%;
  object-fit: cover;
  border-radius: var(--radius-lg,16px);
}

/* 覆盖层 */
.featured-overlay {
  position: absolute; bottom:0; left:0;
  width: 100%; padding:15px;
  background: linear-gradient(to top, rgba(0,0,0,.7), transparent);
  color: #fff; border-radius:0 0 16px 16px;
}
.featured-title { font-size:1.2rem; margin-bottom:4px; font-weight:600 }
.featured-description {
  font-size:0.9rem; opacity:.9; margin-bottom:16px;
  display: -webkit-box; -webkit-line-clamp:2; -webkit-box-orient:vertical;
  overflow: hidden;
}

/* 操作按钮 */
.featured-button {
  display: inline-flex; align-items: center;
  background-color: #C10715; color: #FFFFFF;
  padding:4px 16px; border-radius:9999px;
  font-size:0.9rem; text-decoration:none;
  transition: all 0.2s cubic-bezier(.4,0,.2,1);
}
.featured-button::after { content:'→'; margin-left:4px }
.featured-button:hover { background-color: #C10715 }

/* 响应式适配 */
@media (max-width:992px) {
  .featured-grid { grid-template-columns:1fr 1fr; grid-template-rows:auto }
  .featured-item:first-child { grid-column:span 2; grid-row:span 1; height:auto; min-height:300px }
}
@media (max-width:768px) {
  .featured-grid { grid-template-columns:repeat(2,1fr); gap:10px }
  .featured-item:first-child { min-height:250px }
  .featured-item { height:auto; min-height:180px; aspect-ratio:unset }
  .featured-thumbnail { height:100% }
  .featured-title { font-size:1rem }
}
@media (max-width:480px) {
  .featured-grid { grid-template-columns:1fr }
  .featured-item:first-child { 
    grid-column:span 1; 
    min-height: 220px /* 增大首项高度 */
  }
  .featured-item { min-height:200px; aspect-ratio:3/4 }
  .featured-title { font-size:0.9rem }
}

/* 视频模态框 */
.modal {
  display: none;
  position: fixed; z-index:1000;
  left:0; top:0; width:100%; height:100%;
  overflow: auto; background-color: rgba(0,0,0,.8);
}
.modal-content {
  margin:10% auto; padding:20px;
  border-radius:10px; max-width:800px; width:90%;
  position: relative;
}

/* 关闭按钮 */
.close-btn {
  color: #fff; float: right;
  font-size:72px; font-weight: bold;
  cursor: pointer; width:70px; height:70px;
  display: flex; align-items: center; justify-content: center;
  border-radius:50%; transition: all 0.3s ease;
}
.close-btn:hover { background-color: rgba(252,251,251,.1) }

/* 播放器容器 */
.video-player-container { width:100% }
#brandVideoPlayer {
  width:100%; max-height:500px;
  outline:none; border:none;
}
#brandVideoPlayer:focus { outline:none }

/* 视频信息 */
.video-info {
  margin-top:15px; text-align:center;
}
.video-info h3 { font-size:1.5rem; margin-bottom:10px }
.video-info p { color:#666 }

/* 移动端适配 */
@media (max-width:768px) {
  .close-btn { width:60px; height:60px; font-size:42px }
}

/* 移动端全屏视频播放器样式 */
.mobile-video-fullscreen {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: #000;
  z-index: 9999;
  display: flex;
  flex-direction: column;
  opacity: 1;
  transition: opacity 0.3s ease;
}

.mobile-video-fullscreen video {
  width: 100%;
  height: 100%;
  object-fit: contain;
  background: #000;
}

.mobile-video-fullscreen .title-bar {
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  background: rgba(0,0,0,0.8);
  color: white;
  padding: 15px 10px 10px;
  z-index: 10000;
  display: flex;
  justify-content: space-between;
  align-items: center;
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
}

.mobile-video-fullscreen .title-bar h3 {
  margin: 0;
  font-size: 16px;
  flex: 1;
  font-weight: 500;
  line-height: 1.2;
}

.mobile-video-fullscreen .close-btn {
  background: rgba(255,255,255,0.1);
  border: none;
  color: white;
  font-size: 20px;
  cursor: pointer;
  padding: 0;
  width: 32px;
  height: 32px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 50%;
  transition: background-color 0.2s ease;
}

.mobile-video-fullscreen .close-btn:hover,
.mobile-video-fullscreen .close-btn:active {
  background: rgba(255,255,255,0.2);
}

/* 移动端视频播放器响应式优化 */
@media (max-width: 480px) {
  .mobile-video-fullscreen .title-bar {
    padding: 12px 8px 8px;
  }
  
  .mobile-video-fullscreen .title-bar h3 {
    font-size: 14px;
  }
  
  .mobile-video-fullscreen .close-btn {
    width: 28px;
    height: 28px;
    font-size: 18px;
  }
}

/* ====== 结束：视频板块样式 ====== */

/* ====== 移动端视频网格布局优化 ====== */
@media (max-width: 768px) {
    /* 手机端视频区 1-2-2 布局：第一行1个，第二/三行各2个 */
    .mobile-video-grid { 
        display: grid !important; 
        grid-template-columns: repeat(2, 1fr) !important; 
        gap: 10px; 
    }
    .mobile-video-grid .featured-item:first-child { 
        grid-column: 1 / -1 !important; /* 第一项占满两列 */
        min-height: 167px !important; /* 高度减少约 1/3 */
    }
}

/* 超小屏也保持两列，覆盖全局单列规则 */
@media (max-width: 480px) {
    .mobile-video-grid { 
        grid-template-columns: repeat(2, 1fr) !important; 
    }
    .mobile-video-grid .featured-item:first-child { 
        grid-column: 1 / -1 !important; 
        min-height: 147px !important; /* 高度减少约 1/3 */
    }
}

/* ====== 开始：环境图片板块样式 ====== */
.landscape-grid {
  display: grid;
  grid-template-columns: repeat(3,1fr);
  grid-template-areas: 
    "north north south"
    "west central east";
  gap: 2rem; max-width:1200px; margin:0 auto;
}

/* 网格项 */
.landscape-item {
  position: relative; border-radius:12px; overflow:hidden;
  box-shadow:0 15px 40px rgba(0,0,0,0.1); transition:transform 0.3s ease;
}
.landscape-item:hover { transform:scale(1.05) }

/* 区域定位 */
.north { grid-area:north } .south { grid-area:south }
.west { grid-area:west } .east { grid-area:east } 
.central { grid-area:central }

/* 图片容器 */
.landscape-image {
  position:relative; width:100%; height:400px; overflow:hidden;
  transition:transform 0.3s ease;
}
.landscape-image:hover { transform:scale(1.05) }

/* 覆盖层 */
.landscape-overlay {
  position:absolute; bottom:0; left:0;
  width:100%; padding:1.5rem; color:white;
}
.landscape-overlay h3 { font-size:1.5rem; margin-bottom:0.5rem }
.landscape-overlay p { font-size:1rem; opacity:0.8 }

/* 图片样式 */
.landscape-image img { width:100%; height:100%; object-fit:cover }

/* 操作按钮 */
.landscape-action { text-align:center; margin-top:4rem }
.btn-explore {
  display:inline-block; padding:12px 36px;
  background-color:#C10715; color:white; text-decoration:none;
  border-radius:8px; transition:background-color 0.3s ease;
}
.btn-explore:hover { background-color:#a30610 }

/* 移动端适配 */
@media (max-width:768px) {
  .landscape-grid {
    grid-template-columns:1fr;
    grid-template-areas: 
      "north"
      "south"
      "west"
      "central"
      "east";
  }
  .landscape-image { height:300px }
  .section-title { font-size:2rem }
}
/* ====== 结束：环境图片板块样式 ====== */

/* ====== 开始：公告板块样式 ====== */
.announcement-section {
  background-color: rgba(249,245,240,0.3);
  padding:6rem 0;
}
.container {
  max-width:1500px; margin:0 auto;
  padding:0 2rem;
}

/* 公告内容 */
.announcement-content {
  max-width:1100px; margin:0 auto; text-align:center;
  background-color:rgba(255,255,255,0.6); border-radius:16px;
  padding:4rem 3rem; transition:all 0.3s ease;
  box-shadow:0 10px 30px rgba(193,7,21,0.05),0 5px 15px rgba(193,7,21,0.03);
  border:1px solid rgba(193,7,21,0.1);
}
.announcement-content:hover { /* 悬停效果 */
  box-shadow:0 15px 40px rgba(193,7,21,0.08),0 7px 20px rgba(193,7,21,0.05);
  transform:translateY(-5px);
}

/* 标题区域 */
.announcement-header {
  display:flex; align-items:center; justify-content:center;
  margin-bottom:2rem;
}
.prelude-line {
  display:inline-block; width:50px; height:2px;
  background-color:#C10715; margin:0 1rem;
}
.announcement-title {
  font-size:2rem; color:#2c2c2c;
  font-weight:300; letter-spacing:0.1em;
}

/* 正文内容 */
.announcement-text {
  color:#666; line-height:1.8;
}
.announcement-text p { margin-bottom:1rem }
.announcement-text .announcement-date { /* 日期样式 */
  text-align:right; width:100%; display:block;
  padding-right:3rem; margin-top:2rem;
  font-size:0.9rem; color:#999;
}

/* 响应式适配 */
@media (max-width:1440px) {
  .container { max-width:1200px; padding:0 1.5rem }
  .announcement-content { max-width:900px; padding:3.5rem 2.5rem }
}
@media (max-width:1024px) {
  .container { max-width:95%; padding:0 1rem }
  .announcement-content { max-width:95%; padding:2.5rem }
}
@media (max-width:768px) {
  .container { max-width:98%; padding:0 0.5rem }
  .announcement-content { 
    max-width:98%; width:calc(100% - 1rem);
    padding:2rem 1.5rem;
  }
  .announcement-title { font-size:1.5rem }
  .prelude-line { width:30px }
  .announcement-text p { text-indent:1.5em }
}
@media (max-width:480px) {
  .container { max-width:99%; padding:0 0.25rem }
  .announcement-content { 
    max-width:99%; width:calc(100% - 0.5rem);
    padding:1.5rem;
  }
  .announcement-title { font-size:1.3rem }
}
/* ====== 结束：公告板块样式 ====== */

/* 性能优化和关键渲染路径 */

/* 覆盖：统一缩小副标题字号，确保生效（提高优先级） */
/* 覆盖为：PC 20px，移动端 16px */
.product-showcase .section-title-wrapper .heritage-description,
.product-showcase .section-title-wrapper .heritage-description p {
  font-size: 20px !important;
}
@media (max-width: 768px) {
  .product-showcase .section-title-wrapper .heritage-description,
  .product-showcase .section-title-wrapper .heritage-description p {
    font-size: 16px !important;
  }
}

/* 使用 will-change 提示浏览器优化动画 */
.banner-image {
    will-change: opacity, transform;
    transition: opacity 0.3s ease-in-out, transform 0.3s ease-in-out;
}

.banner-image:hover {
    transform: scale(1.02);
}

/* 减少重绘和重排 */
.lazy-loaded {
    opacity: 1;
    transition: opacity 0.5s ease-in-out;
}

/* 硬件加速 */
.mobile-nav-item,
.product-card,
.heritage-item {
    transform: translateZ(0);
    backface-visibility: hidden;
    perspective: 1000px;
}

/* 性能友好的动画 */
@keyframes fadeIn {
    from { opacity: 0; }
    to { opacity: 1; }
}

.animate-on-load {
    animation: fadeIn 0.5s ease-in-out;
}

/* 减少选择器复杂度 */
.banner-dot.active {
    background-color: #c10715;
}

/* 响应式优化 */
@media (max-width: 768px) {
    /* 移动端性能优化 */
    .product-grid,
    .heritage-grid,
    .landscape-grid {
        display: grid;
        grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
        gap: 1rem;
    }
}

/* 字体渲染优化 */
body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', 
                 Roboto, Oxygen, Ubuntu, Cantarell, 'Open Sans', 'Helvetica Neue', sans-serif;
    text-rendering: optimizeLegibility;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

/* 关键渲染路径 */
.critical-content {
    contain: layout;
}

/* 性能监控辅助类 */
.performance-mark {
    outline: 2px solid transparent;
    transition: outline-color 0.3s;
}

.performance-mark:hover {
    outline-color: rgba(193, 7, 21, 0.5);
}